WO2017163930A1

WO2017163930A1 - Saddled vehicle

Info

Publication number: WO2017163930A1
Application number: PCT/JP2017/009678
Authority: WO
Inventors: 賢上田
Original assignee: 本田技研工業株式会社
Priority date: 2016-03-19
Filing date: 2017-03-10
Publication date: 2017-09-28
Also published as: PH12018501523A1; JP6539739B2; CN108463401B; CN108463401A; JPWO2017163930A1

Abstract

Provided is a saddled vehicle configured so that: an intake air amount regulation device will be protected from muddy water, etc. splashed by a front wheel; and engine cooling effect can be obtained. A saddled vehicle is provided with: an air cleaner (20) disposed behind a front wheel (WF); an engine (30) disposed behind the air cleaner (20) and having a cylinder (32) protruding from a crankcase (31) toward the front and toward a point below the air cleaner (20); and an intake air amount regulation device (40) mounted to an air intake pipe (33) which supplies intake air from the air cleaner (20) to the engine (30) and regulating, in response to operation by a driver, the amount of intake air to be delivered to the engine (30). An extension section (50) extending further toward the rear of the vehicle body than the air cleaner (20) extends toward a point below the intake air amount regulation device (40) and between the intake air amount regulation device (40) and the upper surface (32u) of the cylinder, and the extension section (50) is disposed in the space (S1) between the upper surface (32u) of the cylinder and the air cleaner (20) at a predetermined distance (C1) from the upper surface (32u) of the cylinder.

Description

Saddle riding vehicle

The present invention relates to a saddle riding type vehicle.

Conventionally, as a saddle riding type vehicle, for example, as seen in Patent Document 1,
A front wheel (4) supported on the front of the vehicle body;
An air cleaner (61) disposed behind the front wheel (4);
An engine (disposed at the rear of the air cleaner (61) and having a crankcase (51) and a cylinder (52) projecting forward from the crankcase (51) and below the air cleaner (61) ( 7) and
An intake air amount adjusting device (55) attached to an intake pipe (54) for supplying intake air from the air cleaner (61) to the engine (7) and adjusting the intake air amount to the engine (7) according to the operation of the driver. )
The air cleaner case (62) includes a first shielding plate (62G) integrally extending from the periphery of the front end (62F) of the case (62) toward the left and right and the lower side, and the left and right walls (62H) of the case (62). A pair of left and right second shielding plates (62J) extending left and right from the front, and thereby, the traveling wind including the muddy water splashed by the front wheel (4) and the dust wound up by the front wheel (4) of the air cleaner (61) It is known that it is difficult to invade back (paragraph 0039 of the same publication).

In the conventional saddle riding type vehicle described above, the first shielding plate (62G) integrated with the air cleaner case (62) extends to a position where the lower end thereof is close to the cylinder head cover (see the publication, FIG. 3, FIG. 3). 6) Since the intake air amount adjusting device (55) is disposed behind the first shielding plate (62G), the first shielding plate (62G) is configured so that the intake air amount adjusting device can be obtained from muddy water or the like that the front wheel (4) jumps. (55) is protected.
However, on the other hand, the first shielding plate (62G) prevents the traveling wind from entering the rear of the air cleaner (61). It is not desirable in terms of cooling.

JP 2011-174428 A

The problem to be solved by the present invention is to provide a straddle-type vehicle that can protect the intake air amount adjusting device from muddy water or the like splashed by the front wheels and at the same time obtain an engine cooling action.

In order to solve the above problems, a saddle riding type vehicle of the present invention is
A front wheel supported at the front of the vehicle body,
An air cleaner placed behind the front wheels,
An engine that is disposed rearward of the air cleaner and has a crankcase and a cylinder that protrudes forward from the crankcase and below the air cleaner;
In a straddle-type vehicle equipped with an intake air amount adjusting device that is attached to an intake pipe that supplies intake air from the air cleaner to the engine and adjusts the intake air amount to the engine in accordance with a driver's operation,
An extending portion extending rearward of the vehicle body from the air cleaner extends below the intake air amount adjusting device and between the intake air amount adjusting device and the cylinder upper surface;
The extending portion is disposed in a space between the cylinder upper surface and the air cleaner at a predetermined interval from the cylinder upper surface.
According to this straddle-type vehicle, the extending portion extending rearward of the vehicle body from the air cleaner extends below the intake air amount adjusting device and between the intake air amount adjusting device and the cylinder upper surface. By the unit, the intake air amount adjusting device can be protected from muddy water or the like splashed by the front wheel.
On the other hand, since the extending portion is disposed in a space between the cylinder upper surface and the air cleaner at a predetermined interval from the cylinder upper surface, the space between the cylinder upper surface and the extending portion is not in the cylinder upper surface. It is possible to secure the flow of the traveling wind that heads.
Therefore, according to this straddle-type vehicle, the intake air amount adjusting device can be protected from muddy water or the like splashed by the front wheels, and at the same time, an engine cooling action can be obtained.

In this saddle riding type vehicle,
In a side view, at least a part of the extending portion may be configured to extend to a position overlapping with the intake air amount adjusting device in the vertical direction.
If comprised in this way, it can protect an intake air amount adjusting device more reliably from the muddy water etc. which fly from the front.

In this saddle riding type vehicle,
At least a part of one side portion in the vehicle width direction of the air cleaner may include a bulging portion that bulges toward the rear of the vehicle body and overlaps with the intake air amount adjusting device in a side view.
With this configuration, at least a part of one side of the air cleaner in the vehicle width direction extends to the side of the intake air amount adjusting device, so that the capacity of the air cleaner can be improved, and the intake air amount adjusting device and Due to the overlapping part, the intake air amount adjusting device can be protected from muddy water or the like heading from the side to the intake air amount adjusting device.

In this saddle riding type vehicle,
The lower surface of the air cleaner tilts upward as it goes to the rear of the vehicle body,
At least the rear part of the extension part is a plate-like body and can be configured to extend in a direction away from the lower surface of the air cleaner as it advances toward the rear of the vehicle body.
If comprised in this way, between the lower surface of the air cleaner which inclines upwards as it advances to the vehicle body, and the rear part of the plate-shaped body of the extending part extending in a direction away from the lower surface of the air cleaner as it advances to the vehicle body rear side In addition, it becomes easy to secure a space for arranging the intake air amount adjusting device, and at the same time, the extending portion makes it easy to protect the intake air amount adjusting device from muddy water or the like that the front wheel jumps.

In this saddle riding type vehicle,
At least a part of the lower surface of the extension part can be configured to extend rearward and then further rearward via a step part extending rearward and downward.
With this configuration, the stepped portion can form a blocking surface with a large inclination angle with respect to the traveling direction of the muddy water flying from the front, so that the blocking surface can efficiently block muddy water and the like. It becomes possible.

In this saddle riding type vehicle,
When the intake air amount adjusting device includes a throttle drum,
In a side view, at least a part of the extending portion may be configured to extend to a position overlapping with the throttle drum in the vertical direction.
If comprised in this way, a throttle drum can be more reliably protected from the muddy water etc. which fly from the front.

In this saddle riding type vehicle,
At least the rear part of the extension part is a plate-like body, and the plate-like part and the outer surface of the air cleaner can be integrally connected by vertical ribs extending in the vertical direction.
If comprised in this way, the intensity | strength of the plate-shaped body part of the extension part can be improved.

The left view which shows the principal part of one Embodiment of the saddle riding type vehicle which concerns on this invention. The partial cutting enlarged view of FIG. The elements on larger scale of FIG. The perspective view seen from the slanting back of an air cleaner. The left view of an air cleaner.

Hereinafter, embodiments of a saddle riding type vehicle according to the present invention will be described with reference to the drawings. It should be noted that the drawings are viewed in the direction of the reference numerals. In the following description, front and rear, left and right, and top and bottom are in accordance with the direction seen from the operator, and as necessary, the front of the vehicle is Fr, the rear is Rr, and the left is L, right side is R, upper side is U, and lower side is D. In each drawing, the same reference numerals are given to the same or corresponding parts.

As shown in FIG. 1, the saddle riding type vehicle 1 of this embodiment is
A front wheel WF supported by a front portion of the vehicle body 10;
An air cleaner 20 disposed behind the front wheel WF,
An engine 30 disposed behind the air cleaner 20 and having a crankcase 31 and a cylinder 32 projecting forward from the crankcase 31 and below the air cleaner 20;
An intake air amount adjusting device 40 that is attached to an intake pipe 33 that supplies intake air from the air cleaner 20 to the engine 30 and adjusts the intake air amount to the engine 30 according to the operation of the driver.

As shown in FIG. 2, the air cleaner 20 is provided with an extending portion 50. The extending portion 50 extends rearward of the vehicle body from the air cleaner 20, extends below the intake air amount adjusting device 40 and between the intake air amount adjusting device 40 and the cylinder upper surface 32 u, and has a predetermined amount from the cylinder upper surface 32 u. It is arranged in a space S1 between the cylinder upper surface 32u and the air cleaner 20 with a gap C1 therebetween.

According to the saddle riding type vehicle 1, the extending portion 50 extending rearward of the vehicle body from the air cleaner 20 extends in a direction below the intake air amount adjusting device 40 and between the intake air amount adjusting device 40 and the cylinder upper surface 32u. Therefore, the extension portion 50 can protect the intake air amount adjusting device 40 from muddy water or the like (including small solid objects such as pebbles and sand) splashed by the front wheel WF.
On the other hand, since the extending portion 50 is disposed in the space S1 between the cylinder upper surface 32u and the air cleaner 20 with a predetermined distance C1 from the cylinder upper surface 32u, the cylinder upper surface 32u and the extending portion 50 are separated from each other. The space S2 between them can ensure the flow of the traveling wind A1 toward the cylinder upper surface 32u.
Therefore, according to this straddle-type vehicle, the intake air amount adjusting device 40 can be protected from muddy water or the like splashed by the front wheels WF, and at the same time, the cooling action of the engine 30 can be obtained.
The traveling wind A1 cools not only the upper surface of the cylinder but also the intake pipe 33 and the crankcase 31 (FIG. 1).

As shown in FIG. 2, at least a part of the extending portion 50 (the rear portion 53 in the drawing) extends to a position overlapping the intake air amount adjusting device 40 in the vertical direction in a side view. That is, the rear end 53r of the extending part 50 (rear part 53) is located behind the front end 40f of the intake air amount adjusting device 40.
If comprised in this way, the intake air amount adjustment apparatus 40 can be more reliably protected from the muddy water etc. which fly from the front.

As shown in FIG. 2, at least a portion 21r (see FIGS. 4 and 5) of one side portion 21 in the vehicle width direction of the air cleaner 20 includes a bulging portion that bulges rearward of the vehicle body, and intake air in a side view. It overlaps with the amount adjusting device 40.
If comprised in this way, while at least one part 21r of the one side part 21 regarding the vehicle width direction of the air cleaner 20 extends to the side of the intake air amount adjusting device 40, the capacity of the air cleaner 20 can be improved, The part 21r overlapping with the intake air amount adjusting device 40 can protect the intake air amount adjusting device 40 from muddy water or the like heading from the side toward the intake air amount adjusting device 40.

As shown in FIGS. 2, 3, and 5, the lower surface 20 b of the air cleaner 20 is inclined upward as it advances toward the rear of the vehicle body. On the other hand, at least the rear portion 53 of the extending portion 50 is a plate-like body, and extends in a direction away from the lower surface 20b of the air cleaner 20 as it advances toward the rear of the vehicle body.

If comprised in this way, the lower surface 20b of the air cleaner 20 which inclines upward as it progresses to the rear of the vehicle body, and the plate-like body of the extending portion 50 that extends in a direction away from the lower surface 20b of the air cleaner 20 as it progresses toward the rear of the vehicle body. It becomes easy to secure a space S3 for arranging the intake air amount adjusting device 40 between the rear portion 53, and at the same time, the extending portion 50 makes it easy to protect the intake air amount adjusting device 40 from muddy water or the like splashed by the front wheel.

Further, by forming the space S3 as described above, the intake air amount adjusting device 40 can be disposed close to the back of the air cleaner 20, so that the intake system can be made compact. .

As shown in FIGS. 2 and 3, the lower surface 50 b of the extending portion 50 extends rearward (a portion extending rearward is indicated by reference numeral 51) and then further rearward through a stepped portion 52 extending rearward and downward. It extends (the portion extending rearward of the step portion is indicated by reference numeral 53).

With this configuration, the stepped portion 52 can form the blocking surface 52s having a large inclination angle θ with respect to the traveling direction of muddy water or the like flying from the front (see arrow W in FIG. 3). It becomes possible to prevent muddy water etc. efficiently.

Since the muddy water is effectively blocked by the blocking surface 52s, the amount of muddy water or the like that passes between the step portion 52 and the cylinder 32 and moves rearward is reduced, and the portion that extends rearward of the step portion (the rear portion described above). The amount of muddy water or the like wound up from the rear end 53r of 53 toward the intake air amount adjusting device 40 is also reduced.
In addition, the blocking surface 52s also serves as a guide surface for directing the traveling wind A1 toward the cylinder 32.

In this embodiment, the lower surface 50b of the extending portion 50 as a whole extends rearward and then extends further rearward through a step 52 extending rearward and downward. However, the extending portion If at least a part of the lower surface of 50 extends rearward and then extends further rearward through a stepped portion extending rearward and downward, the same effect can be obtained.

As shown in FIG. 2, the intake air amount adjusting device 40 includes a throttle drum 41.
In a side view, at least a part (the rear portion 53 in the drawing) of the extending portion 50 extends to a position overlapping the throttle drum 41 in the vertical direction in the side view. In other words, the rear end 53 r of the extending part 50 (rear part 53) is located behind the front end 41 f of the throttle drum 41.
If comprised in this way, the throttle drum 41 can be more reliably protected from the muddy water etc. which fly from the front.

As described above with reference to FIG. 3, at least the rear portion 53 of the extending portion 50 is a plate-like body, and the plate-like portion (53) and the outer surface 20 s of the air cleaner 20 extend in the vertical direction. The ribs 20r1 are integrally connected.
If comprised in this way, the intensity | strength of the plate-shaped body part of the extension part 50 can be improved.

In this embodiment, the front part (front part) 51 and the step part 52 of the step part 52 that form the lower surface 50b of the extension part 50 are also plate-like bodies, and the front part 51 and the air cleaner 20 The lower surface 20b is also integrally connected by a vertical rib 20r2.

As shown in FIG. 1, the vehicle body 10 includes a head pipe 11 and a main frame 12 extending rearward from the head pipe 11.
A steering device 13 having a handle 13h and a front fork 13f is rotatably provided on the head pipe 11, and a front wheel WF is rotatably attached to a lower end of the front fork 13f.

A pivot frame 14 is provided at the rear end of the main frame 12, and a swing arm 15 attached to the pivot frame 14 so as to be swingable by the pivot 14 p is disposed, and after being driven by the engine 30 at the rear end. The wheel WR is supported.
The engine 30 is fastened and fixed to the engine mounting portion 12e of the main frame 12 and the engine mounting portion 14e of the pivot frame 14.

As shown in FIGS. 2, 4, and 5, the air cleaner 20 includes a dirty side case 22 that forms an outside air introduction chamber D, a clean side case 23 that forms a clean air chamber C, and an air cleaner element 24. ing. The air cleaner 20 is configured by joining a dirty side case 22 and a clean side case 23 via their air cleaner elements 24 at their joint surfaces 25 (FIG. 5) and fastening and fixing them.

As shown in FIG. 4, a recess 23d is provided on the back of the clean side case 23, and the front portion of the main frame 12 (FIG. 1) partially enters the recess 23d.
Holes 23 h for bolts 23 b are provided in the upper left and right ribs 23 r of the clean side case 23, and the air cleaner 20 is fixed to the main frame 12 by the bolts 23.

As shown in FIG. 4 and FIG. 5, outside air intake ports 23 i are respectively provided at the upper left and right ends of the clean side case 23. The outside air intake port 23 i communicates with the lower end 22 u 1 of the ascending duct 22 u formed at the upper left and right ends of the dirty side case 22. The ascending duct 22u forms an introduction path (rising path) from the lower end 22u1 to the upper end 22u2. The upper end 22u2 of the ascending duct 22u communicates with the upper end 23c2 of the descending duct 23c provided on the upper left and right sides of the clean side case 23, respectively. The descending duct 23 c forms an introduction path (down path) that descends from the upper end 23 c 2 toward the cleaner center, and the lower end 23 c 1 communicates with the outside air introduction chamber D in the dirty side case 22.

Accordingly, outside air enters the case from the outside air intake port 23i on the clean side case 23 side, rises up the ascending duct 22u on the dirty side case 22 side, and descends obliquely on the descending duct 23c on the clean side case 23 side. Thus, the air is introduced into the outside air introduction chamber D on the dirty side case 22 side.

In this embodiment, as described above, the extending portion 50 is disposed in the space S1 between the cylinder upper surface 32u and the air cleaner 20 with a predetermined distance C1 from the cylinder upper surface 32u, and the cylinder upper surface 32u Since the traveling wind A1 toward the cylinder upper surface 32u flows in the space S2 between the extending portion 50, muddy water and the like also flow along with the traveling wind A1. Therefore, in this embodiment, the amount of muddy water splashes toward the air cleaner may increase as compared with the above-described conventional technique (Japanese Patent Laid-Open No. 2011-174428).

On the other hand, in this embodiment, as described above, outside air enters the case from the outside air intake port 23i on the clean side case 23 side, ascends the ascending duct 22u on the dirty side case 22 side, and clean side Since the descending duct 23c on the case 23 side is obliquely lowered and introduced into the outside air introduction chamber D on the dirty side case 22 side, air and muddy water are particularly produced in the process in which the outside air rises up the ascending duct 22u. It becomes easy to separate from the splashes.

The outside air introduced into the outside air introduction chamber D is purified by passing through the air cleaner element 24 and enters the clean air chamber C. The engine passes through the connecting tube 26 (FIG. 4) and the intake pipe 33 connected to the clean side case 23. 30.
4 and 5, 27 is a blow-by gas tube that guides the blow-by gas to the clean air chamber C, and 28 is a breather tube.

The intake air amount adjusting device 40 has a known basic structure itself, and as shown in FIG. 2, the throttle drum 41 and a throttle valve (not shown) that is rotated by a rotation operation of the throttle drum 41. And a throttle body 42 in which is housed.
The throttle drum 41 is of a type that is rotated by two

throttle wires

43 and 44, and the throttle drum 41 has

holes

43h and 44h for engaging pieces fixed to the tips of the

throttle wires

43 and 44, respectively. Is provided.
The

throttle wires

43 and 44 are connected to a throttle grip (not shown) attached to the handle 13h (FIG. 1), and in conjunction with the turning operation of the throttle grip by the driver, the throttle drum 41 (and therefore the throttle valve). Rotate.

In FIG. 2, 45 is a bracket for holding the

throttle wires

43 and 44, and is fixed to the main frame 12.
The air cleaner 20 is provided with a recess 20d for releasing a tool (not shown) for rotating a nut 43n for fixing the throttle wire 43 near the air cleaner 20.

The embodiments of the present invention have been described above, but the present invention is not limited to the above-described embodiments, and can be appropriately modified within the scope of the gist of the present invention.

10: vehicle body, WF: front wheel, 20: air cleaner, 20b: air cleaner lower surface, 20s: air cleaner outer surface, 20r1: vertical rib 21: one side, 30: engine, 31: crankcase, 32: cylinder, 32u: Cylinder upper surface, 33: intake pipe, 40: intake air amount adjusting device, 41: throttle drum, 50: extension part, 50b: extension part lower surface, 52: step part, 53: rear part.

Claims

A front wheel (WF) supported on the front of the vehicle body (10);
An air cleaner (20) disposed behind the front wheel (WF);
An engine (disposed behind the air cleaner (20)) and having a crankcase (31) and a cylinder (32) projecting forward from the crankcase (31) and below the air cleaner (20) ( 30),
An intake air amount adjusting device (40) that is attached to an intake pipe (33) that supplies intake air from the air cleaner (20) to the engine (30) and adjusts the intake air amount to the engine (30) according to the operation of the driver. ) In a saddle-ride type vehicle,
An extension part (50) extending rearward of the vehicle body from the air cleaner (20) is directed below the intake air amount adjusting device (40) and between the intake air amount adjusting device (40) and the cylinder upper surface (32u). Extend,
The extending portion (50) is disposed in a space (S1) between the cylinder upper surface (32u) and the air cleaner (20) at a predetermined interval (C1) from the cylinder upper surface (32u). A straddle-type vehicle characterized by
In claim 1,
A straddle-type vehicle characterized in that at least a part (53) of the extension part (50) extends to a position overlapping with the intake air amount adjusting device (40) in the vertical direction in a side view.
In claim 1 or 2,
At least a part (21r) of one side portion (21) in the vehicle width direction of the air cleaner (20) includes a bulging portion that bulges toward the rear of the vehicle body, and the intake air amount adjusting device (40) in a side view. A straddle-type vehicle characterized by overlapping.
In any one of claims 1 to 3,
The lower surface (20b) of the air cleaner (20) is inclined upward as it advances toward the rear of the vehicle body,
At least the rear part (53) of the extension part (50) is a plate-like body, and extends in a direction away from the lower surface (20b) of the air cleaner 20 as it advances toward the rear of the vehicle body. Saddle type vehicle.
In any one of claims 1 to 4,
A straddle-type vehicle characterized in that at least a part of the lower surface (50b) of the extension part (50) extends rearward and then further rearward via a step part (52) extending rearward and downward. .
In any one of claims 1 to 5,
The intake air amount adjusting device (40) includes a throttle drum (41),
The straddle-type vehicle characterized in that at least a part (53) of the extending part (50) extends to a position overlapping with the throttle drum (41) in the vertical direction in a side view.
In any one of claims 1 to 6,
At least the rear part (53) of the extension part (50) is a plate-like body, and the plate-like part and the outer surface (20s) of the air cleaner (20) are longitudinal ribs (20r1) extending in the longitudinal direction. A straddle-type vehicle characterized by being integrally connected with each other.